title: Methodologic aspects of tympanometry in cats.
abstract: The tympanometric effects of the methodologic variables of direction and rate of pressure change were studied in cats. Tympanogram morphologic findings differed between ascending and descending pressure runs, with the descending ones being simpler in configuration and less influenced by the rate of pressure change. The stability of tympanograms to repetitive testing was examined in the same cats, and five human subjects. Acoustic admittance increased sequentially during the first three pressure sweeps of a repetitive testing sequence in a majority of both groups.
mesh_terms: D000158:Acoustic Impedance Tests / Q000379:methods*; D000818:Animals; D002415:Cats; D004424:Ear Canal; D006801:Humans; D011312:Pressure